Does baking soda and vinegar unclog drains?
By the Drain Guru team · Updated September 27, 2026
Quick answer
Not really. Baking soda and vinegar react into mostly water, salt (sodium acetate) and carbon dioxide gas. The fizz looks busy but has little force against hair or paper clogs. It can help as light maintenance for odors and minor build-up, followed by hot water, but a real clog needs mechanical removal.
What's actually happening
Vinegar (acid) plus baking soda (base) neutralize each other. The bubbles are carbon dioxide escaping, which is harmless and gentle. By the time the fizz reaches a clog, most of the reaction is done.
When it's worth doing
- A mild smell from a sink that drains fine
- Monthly freshening, followed by a kettle of hot water
What works on a real clog
Remove hair by hand, then use a plunger, hand snake, or air-pressure drain opener. See how to unclog a bathroom sink.
More questions
Is it safe to use baking soda and vinegar after drain cleaner?
No. Don't add anything to a drain that has chemical cleaner in it. Wait and flush with plenty of water.
Related answers
General information only. Plumbing codes, prices and landlord-tenant laws vary by location. For gas, electrical, sewer-line or structural problems, contact a licensed professional.